车用扭杆端头镦粗模具结构损伤及寿命研究  

Research on structural damage and life of upsetting mold for vehicle torsion bar end

作　　者：吕彩琴 王天骄 李井吉 居玉辉 Lyu Caiqin;Wang Tianjiao;Li Jingji;Ju Yuhui(School of Energy and Power Engineering,North University of China,Taiyuan 030051,China;Inner Mongolia First Machinery Group Co.,Ltd.,Baotou 014000,China)

机构地区：[1]中北大学能源动力工程学院,山西太原030051 [2]内蒙古第一机械集团有限公司,内蒙古包头014000

出　　处：《锻压技术》2022年第10期216-222,共7页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51275489)。

摘　　要：车用扭杆端头镦粗时所用的模具,会对其变形进行约束和限制,恰当的模具设计不仅可以提高生产效率,而且可以改善扭杆端头的结构及力学性能,提高扭杆的使用寿命,从而减少企业的生产成本。建立了扭杆端头及镦粗模具的有限元模型,采用DEFORM-3D软件对有限元模型进行网格划分,并仿真整个镦粗过程,分析了不同模具结构形状和不同始锻温度下镦粗后的模具磨损、模具寿命、扭杆端头应力、扭杆端头金属材料流速及流线分布。结果表明:始锻温度为1250℃时,采用合理的模具结构进行镦粗,可以减小模具磨损、延长模具寿命,而且成形得到的扭杆端头的综合性能较好。When the vehicle torsion bar end was upset,its deformation was restricted and limited by the used upsetting mold,and proper mold design can not only improve the production efficiency,but also improve the structure and mechanical properties of the torsion bar end,increase the service life of the torsion bar and reduce the production cost of enterprise.Therefore,the finite element models of the torsion bar end and the upsetting mold were established,which was meshed by software DEFORM-3 D.Then,the entire upsetting process was simulated,and after upsetting under different mold structure shapes and different initial forging temperatures,the mold wear,the mold life,the stress of torsion bar end and the metal material flow rate and streamline distribution of torsion bar end were analyzed.The results show that at the initial forging temperature of 1250℃,the reasonable mold structure for upsetting can reduce the mold wear and prolong the mold life,and the comprehensive performance of the formed torsion bar end is better.

关 键 词：镦粗 扭杆端头 模具磨损 模具寿命 始锻温度 

分 类 号：TG316[金属学及工艺—金属压力加工]